An Advanced Ultra-Deep Resistivity Mapping Sensor Reduced Reservoir Uncertainty and Eliminated the Need for a Pilot Hole for the First Time; A Case Study from Offshore Abu Dhabi

2021 ◽  
Author(s):  
Wael Fares ◽  
Islam Moustafa ◽  
Ali Al Felasi ◽  
Hocine Khemissa ◽  
Omar Al Mutwali ◽  
...  
Keyword(s):  
Real Time ◽  
Water Saturation ◽  
Firing Frequency ◽  
Target Zones ◽  
The Real ◽  
Pilot Hole ◽  
Low Resistivity ◽  
Milling Operations ◽  
The Future ◽  
Identify Formation

Abstract The high reservoir uncertainty, due to the lateral distribution of fluids, results in variable water saturation, which is very challenging in drilling horizontal wells. In order to reduce uncertainty, the plan was to drill a pilot hole to evaluate the target zones and plan horizontal sections based on the information gained. To investigate the possibility of avoiding pilot holes in the future, an advanced ultra-deep resistivity mapping sensor was deployed to map the mature reservoirs, to identify formation and fluid boundaries early before penetrating them, avoiding the need for pilot holes. Prewell inversion modeling was conducted to optimize the spacing and firing frequency selection and to facilitate an early real-time geostopping decision. The plan was to run the ultra-deep resistivity mapping sensor in conjunction with shallow propagation resistivity, density, and neutron porosity tools while drilling the 8 ½-in. landing section. The real-time ultra-deep resistivity mapping inversion was run using a depth of inversion up to 120 ft., to be able to detect the reservoir early and evaluate the predicted reservoir resistivity. This would allow optimization of any geostopping decision. The ultra-deep resistivity mapping sensor delivered accurate mapping of low resistivity zones up to 85 ft. TVD away from the wellbore in a challenging low resistivity environment. The real-time ultra-deep resistivity mapping inversion enabled the prediction of resistivity values in target zones prior to entering the reservoir; values which were later crosschecked against open-hole logs for validation. The results enabled identification of the optimal geostopping point in the 8 ½-in. section, enabling up to seven rig days to be saved in the future by eliminating a pilot hole. In addition this would eliminate the risk of setting a whipstock at high inclination with the subsequent impact on milling operations. In specific cases, this minimizes drilling risks in unknown/high reservoir pressure zones by improving early detection of formation tops. Plans were modified for a nearby future well and the pilot-hole phase was eliminated because of the confidence provided by these results. Deployment of the ultra-deep resistivity mapping sensor in these mature carbonate reservoirs may reduce the uncertainty associated with fluid migration. In addition, use of the tool can facilitate precise geosteering to maintain distance from fluid boundaries in thick reservoirs. Furthermore, due to the depths of investigation possible with these tools, it will help enable the mapping of nearby reservoirs for future development. Further multi-disciplinary studies remain desirable using existing standard log data to validate the effectiveness of this concept for different fields and reservoirs.

Ultra-Deep Resistivity Mapping Tool Provided Geostopping Solution to Reduce Uncertainty and Eliminated the Need for Pilot Holes for the First Time Offshore Abu Dhabi

2021 ◽  
Author(s):  
Islam Khaled Moustafa ◽  
Freddy Alfonso Gutierrez ◽  
Ali Saeed Alfelasi ◽  
Hocine Khemissa ◽  
Omar Al Mutwali ◽  
...  
Keyword(s):  
Real Time ◽  
Water Saturation ◽  
Firing Frequency ◽  
Abu Dhabi ◽  
Target Zones ◽  
The Real ◽  
Pilot Hole ◽  
Low Resistivity ◽  
Mapping Tool ◽  
The Future

Abstract Drilling horizontal wells in the mature giant carbonate fields offshore Abu Dhabi, where high uncertainty regarding the lateral distribution of fluids results in variable water saturation, is very challenging. In order to meet the challenges and reduce uncertainty, the plan was to drill pilot holes to evaluate the resistivity of the target zones and plan horizontal sections based on the information gained. To investigate the possibility of avoiding pilot holes in the future, an ultra-deep electromagnetic (EM) tool was deployed to map the mature reservoirs, identifying formation and fluid boundaries before penetrating them, avoiding the need for pilot holes. Prewell inversion modeling was conducted to optimize the spacing and firing frequency selection and to facilitate early real-time geosteering and geostopping decisions. The plan was to run the ultra-deep resistivity mapping tool in conjunction with shallow propagation resistivity, density, and neutron porosity while drilling the 8 ½-in. landing section. The real-time ultra-deep EM inversion was run using depth of inversions up to 120 ft., to be able to detect the reservoir early and evaluate the predicted reservoir resistivity. This would allow optimization of any geostopping decision. The ultra-deep EM tool delivered accurate mapping of thin reservoir layers while drilling the 8 ½ inch section, as well as enhanced mapping of low resistivity zones up to 85 ft. True Vertical Thickness (TVT) in a challenging low resistivity environment. The real-time EM inversion enabled the prediction of resistivity values in target zones prior to entering the reservoir; values were later crosschecked against open-hole logs for validation. The results enabled identification of the optimal geostopping point in the 8 ½-in. section, enabling up to seven rig days to be saved in the future by eliminating pilot holes, in addition to eliminating the risk of setting a whipstock at high inclination with subsequent milling operations. In specific cases, this minimizes drilling risks in unknown/high reservoir pressure zones by improving early detection of a formation tops, thus improving geostopping decisions. Plans were modified for a nearby future well and the pilot-hole phase was eliminated because of the confidence provided by these results. Deployment of the ultra-deep EM tool in these mature carbonate reservoirs may reduce the uncertainty associated with fluid migration. In addition, use of the tool can facilitate precise geosteering to maintain distance from fluid boundaries in thick reservoirs. Furthermore, due to the depths of investigation possible with these tools, it will help enable the mapping of nearby reservoirs for future development. Further multi-disciplinary studies remain desirable using existing standard log data to validate the effectiveness of this concept for different fields and reservoirs.

Navigating Organisation in Times of VUCA: Implications for the HR and OD Profession

2019 ◽  
Vol 12 (2) ◽  
pp. 145-150
Author(s):  
Vasudevan Alasingachar
Keyword(s):  
Experiential Learning ◽  
Real Time ◽  
New Age ◽  
The Real ◽  
The Past ◽  
Formative Stage ◽  
Start Up ◽  
The Future ◽  
Specific Learning

This article addresses two vectors of VUCA interwoven in the narratives, a summary of personal theories about VUCA. Such theories are anchored and arise from experiential learning in my practice as HR/L&D and OD consultants over the past four decades. The implication for HR and OD profession is to consider their relevance when organisations navigate VUCA. Next is the culling out of the specific learning about HR and OD interphases that has worked in my experience, supported by examples and metaphors. The premise I put forward as conclusion are: In order to be at the centre stage of partnering with business, HR and OD have to complement and innovate new-age VUCA strategies. VUCA competencies with appropriate metrics are in the formative stage. The competencies are emerging from the real-time stories of consultants, companies and academia (TATA 26/11 and DuPont safety mandate). Only when HR and OD integrate and work together can the future of leadership or start-up entrepreneurs learn from their insights to ‘thrive in VUCA’.

Application of Real-Time Solid Measurement and Return Flow Rate During Coiled Tubing Milling Operations

2021 ◽  
Author(s):  
Kaveh Yekta ◽  
Ray Phung ◽  
Benjamin Stang ◽  
Tyler Woitas
Keyword(s):  
Real Time ◽  
Flow Rate ◽  
Acoustic Noise ◽  
Acoustic Monitoring ◽  
Ultrasonic Flowmeter ◽  
Return Flow ◽  
Monitoring Device ◽  
The Real ◽  
Coiled Tubing ◽  
Milling Operations

Abstract Among the many applications of Coiled Tubing (CT) services, milling plugs and wellbore sand cleanout are two of the major applications. The transport of solids to the surface, as well as monitoring the return rates, are two sources of information which can have a significant impact on the execution of these jobs. Traditionally the flowback crew communicates this information to the CT control cab upon request. However, by utilizing an acoustic monitor and ultrasonic flowmeter, it can reduce the dependence on flowback operators and provide real-time solid measurement and return flow rate. The acoustic monitor is a passive, non-intrusive device that is designed to measure the acoustic noise induced into the pipe wall as solids impact the inside wall of the pipe. The ultrasonic flowmeter is a clamp-on device that is designed with two transducers that serve as both a transmitter and receiver. In order to prove the concept, five stages of trials were planned and executed. In stage one, CT was rigged into a 150m vertical test well. The equipment included CT mast unit, CT pump, choke manifold, and acoustic monitoring device. Several debris piles from previous milling operations were introduced to the test well, and a CT cleanout was performed. The acoustic monitor system measured the amount of solid to surface, and the results were evaluated. Solids retrieved were then compared to the initial debris piles and correlated to the data received by the acoustic monitor. On the 2nd stage, the acoustic monitoring device was utilized in actual milling operation. The 3rd stage was a yard trial of ultrasonic flowmeter using a CT pump and data acquisition system to evaluate the working envelope of this device, followed by a field trial, in stage 4, utilizing the flowmeter in actual milling operations. The final stage of this trial was planned and executed in milling operations on a five wells pad, utilizing the combined applications of acoustic monitoring (solid measurement) and ultrasonic flowmeter (return rate) devices. All five stages contributed to proof of concept for the applications of solid measurement and return flow rate devices. These trials were successfully planned, executed, and evaluated. The acquired data throughout the five stages of these trials were utilized during and post job operations as lessons learned to optimize the process for future applications. The real-time measurement of solids and flow rate monitoring, independent of flowback operators, enables the CT operator to make informed decisions throughout milling and cleanout operations. The real-time streaming of solids to surface and return flow rate enables the operator and service company’s Engineering team to evaluate and optimize the execution of milling and sand cleanout operations.

scholarly journals TIME ANALYSIS OF VIRTUAL SPECTRUM ANALYZER

2014 ◽  
pp. 31-38
Author(s):  
Wieslaw Winiecki ◽  
Piotr Bilski
Keyword(s):  
Real Time ◽  
Virtual Instrument ◽  
Spectrum Analyzer ◽  
Time Analysis ◽  
The Real ◽  
Spectrum Analyser ◽  
The Future ◽  
Optimisation Procedure

The problem of the Real-Time virtual instrument is presented. The requirements for the Real-Time conditions are explained. The method of the instrument time analysis is proposed. The virtual spectrum analyser is examined in order to reveal properties of the software functions. The optimisation procedure is described and its results are presented. The conclusions for the future developers have been articulated.

Game-changing trends and forces for agricultural financing in sub-Saharan Africa toward 2055: Verification and prioritization through the real-time Delphi method

2018 ◽  
Vol 47 (3) ◽  
pp. 244-256
Author(s):  
Cobus Oberholster ◽  
Chris Adendorff
Keyword(s):  
Real Time ◽  
Delphi Method ◽  
Financial Services ◽  
Business Models ◽  
Research Effort ◽  
Sub Saharan Africa ◽  
Potential Game ◽  
The Real ◽  
The Future ◽  
Sub Saharan

This article reports on a research effort that looked at the future of agricultural financing in sub-Saharan Africa (SSA) toward 2055. The real-time Delphi method was used to verify key megatrends that should define the future of agriculture and agricultural development in the region. The implications of these trends for agricultural financing, together with potential game-changing forces with regard to the future delivery of financial services to agricultural producers, were also prioritized. The real-time Delphi method was employed to check both the future importance and probability of occurrence of the identified trends and corresponding disruptive technologies, business models, innovations in value-chain financing, market configurations, and institutional innovations. In addition, the method was also used to investigate the future perspectives of experts and to identify any specific, promising technological areas, innovations, and business models. Key elements of a desired future for agricultural financing in SSA were also confirmed.

scholarly journals Chronology of The Time of The Narrative Discourse in The Novel – Gahishtineka Waki Mirne

2020 ◽  
Vol 23 (2) ◽  
pp. 123-147
Author(s):  
Mohsin Arif Salih ◽  
Dildar Ibrahim Ahmed ◽  
Chinar Sadiq Gazi
Keyword(s):  
Real Time ◽  
Narrative Discourse ◽  
The Novel ◽  
The Real ◽  
The Future ◽  
Ancient Times ◽  
Double Time

Since ancient times, man has struggled with time, in order to organize his life and overcome the obstacles of life, so he has always resorted to glorifying events and experiences that happened to him in order to record his heroism in order to become a solid motivation for him to advance in the future, without any doubt the narration of events has a feature or a chronological feature of his three temporal verbs (past, present, future). This is why time has become an important topic, as many scholars and critics have undertaken studies in order to determine the sequence and chronological organization in the historical and literary fields. Novel as a narrative genre took time as an artistic feature of a fundamental role in the field of narration, and therefore time took a place especially in the field of novel writing, while when (Gerard Genet) studied the novel from the chronological aspect of the story in the narrator’s speech and the events of the novel according to the recognized chronological organization, he reached a stage It is developed in the analysis of narrative discourse, making the novel a part of the double time (the time of the story and the time of the speech) with three levels (order, duration, frequency) and this by determining the real time or referring to it. This research is an attempt to define the chronology of the narrative discourse under the title (Chronology of the Time of the Narrator's Speech in the Novel Gahishtineka waki mirne). According to the opinions of (Gerard Genet).

The Real-Time Neural Genesis of a Punchline

2014 ◽  
Author(s):  
Irving Biederman ◽  
Ori Amir
Keyword(s):  
Real Time ◽  
The Real
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